Fireproof wall or partition for buildings



N0. 6|3,462. Patented Nov. l, I898.

.1. T. MQGOBMIGK. FIBEPBOOF WALL 0R. PARTITION FOB BUILDINGS (Application filed Apr. 8, 1898.)

m: NORRIS Firms ca. PHOTO-LITHO.. WASHINGTON. n. c.

UNITED STATES PATENT OFFICE JOHN T. MCCORMICK, OF SAN FRANCISCO, CALIFORNIA.

FIREPROOF WALL OR PARTITION FOR BUILDINGS.

SPECIFICATION forming part of Letters Patent No. 613,462, dated November 1, 1898.

Application filed April 8, 1898. Serial No. 676,894. (No model.)

To all whom, it may concern: are placed approximately intermediate be- Be it known that I, JOHN T. MCCORMICK, tween those on the opposite side.

a citizenof the United States, residing in the The lathing-surface being applied to both city and county of San Francisco, State of sides will form a double partition, with an in- California, have invented an Improvement terior air-space between, the plaster making in Fireproof Walls or Partitions for Buildthe bond with the vertical network in the ings; and I hereby declare the following to be usual manner.

a full, clear, and exact description of the same. Another method of securing the bars A and My invention relates to improvements in C together is to slot the bars A horizontally 1o fireproof construction of walls and partitions instead of vertically, and the slots are made for buildings. A of a width equal to that of the bars C, so that It consists of the parts and the constructhe .bars C may be slipped through the slots. tions and combinations of parts hereinafter The bars C are each of them notched, as described and claimed. shown at D, the notches coinciding with the 15 Figure l is a View of one form of my imposition of the vertical studs A, so that when proved construction. Fig. 2 shows another the bars C have been slipped through to their method of connecting the bars. Fig. 3 shows proper position each of the slots D will lie an arrangement in which no air-space is left in the plane of the vertical studs A. between the two walls of the partition. The slots D are of a depth equal to the dis- 7 20 The object of my invention is to provide tance between the ends of the horizontal holes an improved and economical method of build- B and the edges of the vertical bars A, so that ing intermediate walls and partitionsinbuildwhen the bars C have been pushed forward ings and in making the same fireproof and so that the slotsD interlock and engage with either with or without an intermediate airthe holes B the edges of the bars C will be in 25 space. the plane of the vertical bars A. The bars A represents vertical bars or studding, are then locked in this position by means of which may be made, say, three inches, more keys or wedges E, which are driven in behind or less, in width and standing transversely them, thus securing the whole structure to= of the proposed partition. Through these gether ina firm manner. The metallic lath- 30 upright bars, as shown in Fig. 1, are made ing is then applied to the opposite sides of slots or holes B, which are punched close to the proposed wall or partition, as before de-' the edges of the partitions, and the strips C scribed. are then passed through these holes and In some cases I have found it desirable to twisted, so that they are locked in the holes, make the partition without any intervening '5 and the bars thus lie approximately horizonair-space. In this case the vertical bars A tal, with their edges flush or in the same plane are made smaller in width and only one series with the edges of the bars A; of holes are punched through them. The

In punching the holes B care is taken to transverse barsCare then inserted andlocked punch them at such a distance from the edges by either of the previously-described methods, 1

40 of the barsA that when the bars C have been and the metal lath is attached to one side. 0 thus twisted their outer edges will lie in the The plaster is then applied upon one side of same plane with the edges of bars A. The the partition. What is known as the key, wire network or other form of metallic lathformed by the plaster oozing through to the ing is then secured to the edges of the bars, opposite side, projects in a rough irregular 45 forminga continuoussmooth vertical surface surface, the outer side being made smooth in 5 upon which the plaster is afterward laid. the usual manner. After this coating of The bars A are slotted on both edges, and plaster has become sufliciently set another the bars C are thus introduced on both edges coating of plaster is applied on the roughened of the bars A, and, ashere shown, they are alside formed by the keyof the first coat, and

5c ternated, so that the bars C upon one side this key forms a sufficient hold for the second loo coat upon the opposite side, thus making a solid.plastered wall, comprising two coats of plaster upon opposite sides of the lathin g, and correspondingly thickening the wall,l)ut leaving no intermediate air-space.

Having thus described my invention, what I claim as new, and desire to secure byLetters Patent, is

l. A wall-partition comprising the vertical and horizontal metal bars directly interlocked at their points of intersection and with their edges approximately in the same plane.

2. A wall or partition comprising vertical bars standing transversely to the plane of the partition having slots made through them at points inside of their opposite edges, horizontal bars adapted to pass endwise through said slots, and a means for locking them directly in said slots with their edges approximately coinciding with the plane of the edges of the vertical bars.

3. A wall or partition consisting of vertical bars standing transversely to the plane of the partition having slots or holes made through them near but inside of their opposite edges, horizontal bars passing endwise through said slots and means in said slots for locking said bars together with their edges approximately coinciding with the plane of the partition upon opposite edges of the vertical bars, and metallic lathin g secured to said bars adapted to receive coatings of plaster upon opposite faces of the proposed partition.

4. A wall or partition consisting of vertical and horizontal bars with the horizontal bars passing endwise through the vertical bars at points inside of the outer edges of the same, with devices for interlocking said bars at their points of intersection so as to form a double series of alternating horizontal bars upon opposite edges of the vertical bars with their outer edges approximatelyin the plane of the two sides of the partition, metallic lathing secured to a framework thus formed and having plastered surfaces formed upon opposite sides whereby an intermediate air-space is provided.

In witness whereof I have hereunto set my hand.

JOHN T. MCCORMICK.

Vitnesses:

O. O. SHERLING; Sr. JOHN E. l\ICCORMTCl(. 

